Oil-burner.



J. H. T. & V. H. MILLS.

OIL BURNER.

APPLIOATIQN FILED JUNE3,1911.

1,035,459. Patented Aug. 13,1912.

2 SHEETS-SHEET 1.

VIZ/Halls COLUMBIA PLANOURAFH $0., WASNINGYON. D. C.

J. H. T. & V. H. MILLS.

OIL BURNER.

APPLIOATION FILED JUNE 3, 1911.

Patented Aug. 13, 1912.

2 SHEETS-SIIEET 2.

attowwg,

COLUMBIA PLANOGRAPM 60.. WASHINGTON. n. c.

UNITED STATES PATENT OFFICE.

'JOHN H. '1. MILLS AND VIRGIL H. MILLS, OF HUBBARD, TEXAS.

OIL-BURNER.

Specification of Letters Patent.

Application filed June 3, 1911.

Patented An". 13, 1912.

Serial No. 631,168.

To all whom it may concern:

Be it known that we, JOHN H. T. Mums and VIRGIL H. MILLS, citizens ofthe United States, residing at Hubbard, in the county of Hill and Stateof Texas, have invented certain new and useful Improvements inOil-Burners, of which the following is a specification.

This invention relates to hydro-carbon burners and more particularly tothat class of burners in which a jet of steam or air is employed foratomizing the fuel'at the burner tip.

The primary object of the invention is to provide an oil burner,especially designed for cooking and heat-ing stoves and which shallsuccessfully operate in case the water fed to the generator is impure orcontains a large proportion of minerals, without liability of cloggingor otherwise obstructing the steam passage at the burner tip, or withoutrequiring frequent cleaning of the parts.

A further object is to provide a burner having a conical shaped steam orother fluid outlet and provided with a fuel conductor discharging atsaid outlet, thus to spread the steam and insure perfect combustion ofthe fuel.

A further object is to provide a burner including a hollow body portionpierced by a conical shaped steam outlet, the inner edge of which isrelatively thin and disposed flush with the inner wall of said bodyportion so as to prevent the lodgment of foreign particles at theconical outlet and also to permit cleaning of the interior of the burnerand inner face of the steam outlet at one operation by means of a swabor other suitable tool.

A further object is to provide a safety valve by means of which thesteam at the burner tip may be maintained at a constant pressure, saidvalve being removable so as to permit access to be readily had to theinterior of the burner to facilitate cleaning the latter when necessary.

A further obj ectis to provide novel means for supporting the valve onits seat, and means for permitting the removal of the valve withoutdisturbing the adjustment of the valve supporting spring.

A still further object of the invention is generally to improve thisclass of devices so as to increase their utility, durability andefliciency.

Further objects and advantages Will appear in the following description,it being understood that various changes in form, proportions and minordetails of construction may be resorted to within the scope of theappended claims.

For a full understanding of the invention and the merits thereof,reference is to be had to the following description and accompanyingdrawings, in which:

Figure 1 is a perspective view of a cooking stove provided with ahydro-carbon burner constructed in accordance with our invention; Fig. 2is a perspective view of the burner detached; Fig. 3 is a transversesectional view, showing the construction of the steam outlet; Fig. 4: isan end elevation; Fig. 5 is a longitudinal sectional view; Fig. 6 is atransverse sectional view; Fig. 7 is a perspective view, illustrating amodified form of burner; Fig. 8 is a side elevation of Fig. 7 Fig. 9 isa transverse sectional view, showing the construction of the steamoutlet; Fig. 10 is a longitudinal sectional vlew.

Corresponding and like parts are referred to in the following descrition and indicated in all the views of t e drawings by the samereference characters.

The improved burner forming the subject matter of the present inventionis principally designed for use in connection with cooking or heatingstoves, and by way of illustration is shown applied to a cooking stoveof the ordinary construction in which 5 designates the fire box, 6 thecover and 7 the usual lids.

The device comprises a casing 8, preferably cylindrical in shape, asshown, and having one end thereof threaded at 9 for connection with asteam generator 10 of any suitable construction, said generator beingextended within the firc box 5 and having its rear end provided with aconductor 11, through which water is supplied to the member 10 for thepurpose of generating steam for delivery to the burner. One side of thecasing 8 is provided with a flat face 12 having a substantially conicalshaped depres sion 13 formed therein and communicating with the steamchamber 14 of the casing, as shown, said depression 13 forming a steamoutlet and having its inner edge relatively thin and. disposed flushwith the inner wall of the chamber 14, as indicated at 15, so as toprevent the lodgment of lime and other foreign matter in the water onthe lip 15, which would have a tendency to clog the steam outlet andobstruct or otherwise interfere with the proper operation of the burner.

Extending transversely through the casing 8, at the Hat face 12 thereof,is an oil conductor 16, one end of which is extended to a suitablesource of oil supply, while the other end thereof pierces the tapered orconical shaped steam outlet 13 and is provided with either a plain orbeveled end 17 so as to spread the fuel and thus insure perfectcombustion thereof. The free end of the fuel conductor 16 may bearranged at any angle or inclination with reference to the wall of thesteam outlet, according to the amount of spread desired to be lHlPHTtedto the flame, it being preferred, however, to arrange the outer end ofthe conductor 16 at an angle of approximately forty-live degrees withrespect to the steam outlet as such an inclination has been found mostdesirable when the burner is used in connection with cooking and heatingstoves. It will here be noted that by making the steam outletsubstantially conical in shape with the free end of the oil conductorintersecting the steam discharge orifice, a portion of the steam willsurround the discharge end of said oil conductor, thus to thoroughlyatomize the fuel and cause the flame to be concentrated. below thegenerator 10 and directed upwardly in contact with the caps or lids 7 ofthe stove. It will also be noted that by having the interior of thecasing 8 entirely unobstructed, with the inner edge or lip 15 of thesteam outlet disposed flush with the inner wall of the steam chamber it,both the inner face of the steam outlet and said steam chamber may becleaned at one operation, by merely passing a swab or other suitabletool through the casing.

Secured to or formed integral with one end of the casing 8, is alaterally extending arm 18 having spaced flanges 19 and provided at itsfree end with a. transverse bar 20 spaced from the body of the arm toform. an opening 21 communicating with the space between the flanges 19,as shown, to permit the passage of a valve supporting member, indicatedat 22. -The valve supporting member 22 is preferably formed of a singlelength of spring metal having an intermediate portion bent upon itselfto form spaced arms of difierent lengths, the short arm being providedwith a laterally curved terminal 23 and the long arm of the spring beingextended over the adjacent end of the casing 8 to form a support for avalve 24. The valve 24 is preferably in the form of a flat metal diskhaving a pin 25 extending laterally therefrom and journaled in asuitable opening in the long arm of the supporting member 22, the headof the pin 25 being upset so as to form a permanent connection betweenthe member 22 and valve, while at the same time allowing the disk orvalve 2 1 to rotate and thus firmly seat itself on the adjacent end ofthe casing 8, the latter being inclined or beveled at 26 in order toinsure a good contact between the parts.

Extending transversely through the valve supporting member 22, at thebent portion thereof, is a screw 27 having a nut 28 thread ed thereonand by means of which the tension of the arms comprising the valve supporting member may be controlled at will so as to regulate the pressureexerted by the valve on the valve seat 26, there being a similar nut 29engaging the threaded end of the screw 27 and bearing against the nut 28for locking the parts in adjusted position.

it will here be noted that the curved terminal 23 of the short arm ofthe valve supporting member, serves to guide said arm in the opening 21when positioning the valve upon or removing said valve from the casing85. Thus it will be seen that when it is desired to clean the interiorof the casing 8, it is merely necessary to exert a slight longitudinalpull on the valve supporting member 22, when the valve, together withsaid supporting member may be readily detached from the casing withoutaffecting the tension of said valve supporting member. With the valve 2removed, the cleaning of the interior of the casing 8, as well as theinner face 15 of the steam outlet may be readily efiected by passing aswab or other suitable tool longitudinally through said casing, asbefore stated.

The flanges 19 not only serve to reinforce and strengthen the arm 18,but also serves to center the valve supporting member 22 on the casing8, while the curved terminal 23 of the valve supporting member, byengagement with the valve casing 8, serves to limit the inwardlongitudinal movement of said member, thus to insure proper seating ofthe valve 2 1 under all conditions.

In Figs. 7 to 10 of the drawings, there is illustrated a modified formof the invention especially designed for use when soft water, or waternot containing such a large percentage of minerals, is employed forgenerating steam for delivery to the burner. In this form of the device,that portion of the casing 8 opposite the threaded end thereof, isformed. with an enlargement 31 having a tapered steam outlet 13 piercedby a fuel conductor 16 of the construction similar to that shown in Fig.3. The enlargement 31, however, is provided with a conical steam chamber32 which communicates with the steam chamber in the casing 8, saidconical steam chamber 32 being normally closed by a valve 33. The valve33 is retained in posi tion on its seat by a spring 34, one end of whichis secured to the inclined face 35 of a supporting arm 36, while theother end thereof is provided with a lug fitting in a depression formedin the adjacent surface of the valve 33. In this case, the valve isprovided with a laterally extending handle 37 to facilitate removing thevalve when it is desired to effect the cleaning of the interior of theburner. The outer end of the spring 34- is secured to the inclined face35 of the arm 36 by means of a screw 38 so that by adjusting the screw,the tension of the spring may be regulated, said screw being lockedagainst rotation by a nut 3 Extending laterally from one side of the arm36, is a lug 40, which, by engagen'lent with the adjacent edge of thespring 34, serves to prevent lateral movement of said spring. Thus itwill be seen that by exerting an upward pressure on the handle 37 of thevalve and swinging said valve and spring 3 laterally until the springclears the lug 410, the

,valve may be entirely detached from the spring so as to expose thechamber 32 and thus permit cleaning of the interior of the casing.

By removing the valve 2st shown in Fig. 2 of the drawings and insertinga suitable plug in the open end of the casing S, the burner may be usedwith good effect on relatively large furnaces.

A burner constructed in accordance with this invention, can bethoroughly cleaned without disturbing the oil or water controllingvalves and without putting out the fire during the cleaning operation,as the raw oil at the discharge end of the fuel conductor keeps theflame burning and the steam atomizes said raw oil as soon as the safetyvalve is replaced.

It will of course be understood that the burners may be made indifferent sizes and shapes, and that steam, air or other fluid may beemployed for atomizing the oil. It will also be understood that thesteam outlet may be made either round, oval, elliptical or any otherdesired shape without departing from the spirit of the invention.

Having thus described the invention, what is claimed as new is:

1. An oil burner including a casing having a steam chamber and providedwith a substantially conical outlet, an arm extending laterally from thecasing, a safety valve yieldably supported on said arm and forming aclosure for one end of the steam chamher, and a fuel conductordischarging at said outlet.

2. An oil burner including a casing having one end thereof provided withmeans for connection with a steam generator, a valve extendingtransversely across and bearing against the other end of the casing,there being a substantially conical shaped steam outlet formed in thecasing and communicating with the interior thereof, and a fuel conductorpiercing the casing at the steam outlet.

3. An oil burner including a casing having an unobstructed steamchamber, there being a substantially conical outlet leading into theinterior of the casing, a valve forming a closure for one end of saidchamber, and a fuel conductor extending transversely through the casingand dischargmg at the steam outlet.

An oil burner including a casing having a steam chamber and providedwith an outlet, an arm extending laterally from the casing, a yieldablesupport mounted on the arm, a valve carried by the support and forming aclosure for one end of the casing, and a fuel conductor discharging atsaid outlet.

5. An oil burner including a casing having one end thereof provided withmeans for attaclunent to a steam generator and its other end beveled toform a valve seat, said casing being provided with a steam outletcomuumicating with the interior of the easing, a fuel conductorextending through the casing and discharging at the steam outlet, an armprojecting late ally from said casing, a support detachably secured tothe arm, and a safety valve carried by the support and engaging saidvalve seat.

(5. An oil burner including a casing having a steam chamber and providedwith an outlet, a fuel conductor discharging at said outlet, an armextending laterally from the casing and provided with spaced flanges, asupporting member having one end thereof seated between said flanges, avalve mounted on the other end of the supporting memher and forming aclosure for one end of the casing, and means for regulating the tensionof said :nip iorting member.

7. An oil burner including a tubular casing having a steam chamber andprovided with an outlet. a fuel conductor discharging at the steamoutlet, an arm extending laterally from the casing and provided with atransverse bar spaced from the body of the arm to form an opening, avalve support including spaced arms of differentlengths, one of which isadapted to enter the opening in the arm of the casing, a valve mountedon the other arm of the valve support and forming a closure for one endof the casing, and means piercing the arms of said valve support forregulating the tension thereof.

8. An oil burner including a tubular casing having an interior chamberand provided with intersecting steam and fuel outlets, an arm extendinglaterally from the casing and provided with spaced flanges, a transversebar spaced from the body of the arm to form an opening, a valvesupporting member including spaced arms, one of which is shorter thanthe other and provided With a curved terminal adapted to pass throughsaid opening for engagement with the flanges, a Valve mounted 011 theother arm of the supporting member and forming a closure for one end ofthe casing, and means piercing said arms for regulating the pres sureexerted by the valve on the casing.

9. An oil burner including a tubular easing having one end thereofthreaded for connection with a steam generator and provided withintersecting steam and fuel outlets, an arm projecting laterally fromthe casing and provided with spaced flanges and having-an opening nearone end of said arm, a valve supporting memherformed of a single lengthof spring metal bent upon itself to produce spaced arms of difierent oneend of the casing, a screw piercing both arms of the valve supportingmember, and main and auxiliary nuts engaging the threads on the screw.

in testimony whereof, we affix our signatures in presence oftwowitnesses.

JOHN H. T. MILLS. VIRGIL h. MILLS. (Vi tnesses M. A. J. OARLISLE, T. E.FARBKER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

